body {
  background-color: #000;
}
#container {
  position: absolute;
  width: 800px;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  /* border: 3px solid #fff; */
  font-size: 25px;

}
#canvas1 {
  /* border: 5px solid #000; */
  position: relative;
  width: 800px;
  height: 700px;
}
#slider {
  width: 100%;
}
p {
  color: #fff;
}